Side blowing slit positive pressure drafting device with jacket
By designing a jacketed side air blowing slit positive pressure drafting device in the slit positive pressure drafting technology, high-pressure air is blown toward the fiber bundle using a static pressure chamber and a blow hole, so that it forms a curved type in the slit , solve the problems of high pressure, large flow rate and high energy consumption in the prior art, and achieve the effect of increasing drafting speed and reducing energy consumption.
Patent Information
- Application Number
- CN202323637699.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing slit positive pressure drafting technology has problems such as high compressed air pressure, large flow rate and high energy consumption.
Design a positive pressure drawing device for side air blowing slit with jacket, and blowing external high-pressure air through the static chamber and the air blow hole to the bundle inside the skirt seat slit from outside to inside, so that the bundle of fibers is placed in the slit The curved shape is formed in the middle, which increases the drafting speed, reduces the drafting pressure, and saves energy consumption.
With the same drafting speed and compressed air consumption, the drafting force and operating speed of the fiber bundle are increased, the drafting pressure and air consumption are reduced, and the energy-saving effect is achieved.
Smart Images
Figure CN222499490U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a side-blowing slit positive-pressure drafting device with a jacket, which relates to the technical field of nonwoven fabric production equipment, in particular to a side-blowing slit positive-pressure drafting device with a jacket. Background Art
[0002] Slit positive pressure drafting uses positive pressure airflow as the drafting power. The spinning channel is fully open and uses compressed air as the air source. Its working principle is: compressed air enters the drafter, enters the drafting slit from the guide gap, and is ejected from the bottom. The high-speed airflow generates negative pressure at the fiber entrance and draws the fiber and ambient air into the slit. The airflow in the slit generates friction on the fiber. Relying on the friction, the compressed air drives the fiber to move together, so that the fiber is axially stretched. However, the existing slit positive pressure drafting technology has the defects of high compressed air pressure, large flow rate and high energy consumption.
[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to study and design a new side-blowing slit positive pressure drafting device with a jacket to overcome the problems existing in the prior art. Summary of the invention
[0004] In view of the technical problems of high compressed air pressure, large flow rate and high energy consumption in the above-mentioned prior art, a side blowing slit positive pressure drafting device with a jacket is provided. The utility model mainly blows external high-pressure air from the outside to the inside through the static pressure cabin and the blowing hole to the fiber bundle inside the skirt seat slit, so that the fiber bundle forms a curve from top to bottom in the skirt seat slit, thereby increasing the drafting speed, reducing the drafting pressure and saving energy consumption.
[0005] The technical means adopted by the utility model are as follows:
[0006] A side-blowing slit positive pressure drafting device with a jacket comprises: a skirt seat installed at the lower part of a drafter and a side-blowing structure installed on the two side walls of the skirt seat;
[0007] Furthermore, the side blowing structure includes: a blowing hole opened on the side wall of the skirt, a static pressure cabin arranged outside the side wall of the skirt, and a positive pressure blowing structure connected to the static pressure cabin through an air pipeline;
[0008] Further, the blowing hole is located entirely within the static pressure cabin;
[0009] Furthermore, the positive pressure blowing structure inputs high-pressure gas into the static pressure chamber. After passing through the static pressure chamber, the high-pressure gas is blown into the skirt through the blowing holes, blowing air on the fiber bundles passing through the slits in the skirt from top to bottom, so that the fiber bundles form an S-shaped running trajectory in the slits, thereby increasing the stretching force on the fiber bundles and improving the running speed of the fiber bundles.
[0010] Furthermore, the static pressure cabin is a cabin body enclosed by a static pressure cabin jacket arranged on the outer side wall of the skirt.
[0011] Furthermore, a connecting pipe is provided on the static pressure chamber jacket for connecting with the positive pressure blowing structure.
[0012] Furthermore, the blowing hole is a long hole that runs through the inside and outside of the side wall of the skirt;
[0013] Furthermore, the blowing holes are long holes horizontally arranged along the length direction of the skirt;
[0014] Further, the length of the blowing hole is not less than the length of the slit.
[0015] Furthermore, the number of the blowing holes is not less than 2.
[0016] Furthermore, the blowing holes are arranged on the two side walls of the skirt in either a vertically staggered form or a horizontally symmetrical form.
[0017] Furthermore, the blowing holes are arranged on the two side walls of the skirt in a form of being perpendicular to the slit or inclined downward from outside to inside.
[0018] Compressed air blows from the rectangular long hole of the static pressure cabin to the fibers inside the skirt seat slit from outside to inside. The fibers will be impacted by the compressed air on the side of the rectangular long hole. The fibers will form a curve from top to bottom in the skirt seat slit. The high-speed jet airflow of the drafter will produce a top-to-bottom pressure thrust on the fibers at the curve. At the same time, the friction force generated by the high-speed jet airflow on the fibers will increase the drafting speed. At the same drafting speed, the required drafting pressure is low and the compressed air consumption is low, or in other words, at the same drafting pressure and compressed air consumption, the drafting speed is higher, which can achieve energy-saving effect.
[0019] At the same time, the air source pressure of the positive pressure blowing structure is adjustable, and the air source pressure is adjusted according to the drafting speed.
[0020] Compared with the prior art, the utility model has the following advantages:
[0021] 1. The utility model provides a side-blowing slit positive-pressure drafting device with a jacket. The fibers are impacted by the side airflow in the slit of the skirt seat, so that the running trajectory of the fibers in the slit of the skirt seat forms a curve from top to bottom. The high-speed jet airflow of the drafting device will generate a top-to-bottom pressure thrust on the fibers at the curve. At the same time, the friction force generated by the high-speed jet airflow on the fibers increases the drafting force on the fibers under the same drafting pressure and compressed air consumption, and the drafting speed is improved, so that the fiber performance is better.
[0022] 2. The side-blowing slit positive-pressure drafting device with a jacket provided by the utility model requires lower drafting pressure and consumes less compressed air while maintaining the same drafting speed, thus achieving an energy-saving effect.
[0023] In summary, the technical solution of the utility model solves the problems of high compressed air pressure, large flow rate and high energy consumption in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0026] Figure 2 This is an axial cross-sectional view of Embodiment 1 of the present utility model;
[0027] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model;
[0028] Figure 4 This is a cross-sectional view of the skirt seat of Embodiment 2 of the present utility model;
[0029] Figure 5 This is a cross-sectional view of the skirt seat of Embodiment 3 of the present utility model;
[0030] Figure 6 This is a cross-sectional view of the skirt seat of Embodiment 4 of the present utility model;
[0031] Figure 7 This is a schematic diagram of the distribution of fibers in the skirt with horizontally staggered long holes of the utility model;
[0032] Figure 8 It is a schematic diagram of the force situation of a single fiber in a skirt seat with horizontally displaced long holes of the utility model;
[0033] Fig. 9 It is a schematic diagram of the distribution of the fibers in the skirt with the long hole tilted downward and staggered according to the utility model;
[0034] Fig.10 It is a schematic diagram of the force situation of a single fiber in the utility model in a skirt seat with a long hole tilted downward and staggered;
[0035] Fig.11 This is a schematic diagram of the stress condition of a single fiber in the skirt of an existing slit positive pressure drawing device.
[0036] In the figure:
[0037] 1. Skirt 11. Slit;
[0038] 2. Blowing hole;
[0039] 3. Static pressure chamber 31, static pressure chamber jacket 32, connecting pipe fittings. DETAILED DESCRIPTION
[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0044] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0047] Example 1
[0048] like Figure 1-3 As shown, the utility model provides a side-blowing slit positive-pressure drafting device with a jacket, comprising: a skirt 1 installed at the lower part of the drafter and a side-blowing structure installed on the two side walls of the skirt 1; the side-blowing structure comprises: a blowing hole 2 opened on the side wall of the skirt 1, a static pressure cabin 3 arranged outside the side wall of the skirt 1, and a positive-pressure blowing structure connected to the static pressure cabin 3 through an air pipeline; the positive-pressure blowing structure inputs high-pressure gas into the static pressure cabin 3, and the high-pressure gas is blown into the skirt 1 through the blowing hole 2 after passing through the static pressure cabin 3, and blows air to the fiber bundle passing through the slit 11 in the skirt 1 from top to bottom, so that the fiber bundle forms an S-shaped running track in the slit, thereby increasing the drafting force on the fiber bundle and improving the running speed of the fiber bundle.
[0049] The static pressure cabin 3 is a cabin body enclosed by a static pressure cabin jacket 31 arranged on the outer side wall of the skirt 1.
[0050] A connecting pipe 32 is provided on the static pressure chamber jacket 31 for connecting with the positive pressure blowing structure.
[0051] The blowing hole 2 is completely located in the static pressure cabin 3.
[0052] The blowing hole 2 is a long hole penetrating the inside and outside of the side wall of the skirt 1 ; the blowing hole 2 is a long hole horizontally arranged along the length direction of the skirt 1 ; the length of the blowing hole 2 is not less than the length of the slit 11 .
[0053] The number of the blowing holes 2 is 4.
[0054] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a staggered manner up and down.
[0055] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a manner of being inclined downward from the outside to the inside.
[0056] Example 2
[0057] like Figure 4 As shown, (based on Example 1,) the utility model also provides a side blowing slit positive pressure drafting device with a jacket;
[0058] The number of the blowing holes 2 is 2.
[0059] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a horizontally symmetrical manner.
[0060] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a manner of being inclined downward from the outside to the inside.
[0061] Example 3
[0062] like Figure 5 As shown, (based on Example 1,) the utility model also provides a side blowing slit positive pressure drafting device with a jacket;
[0063] The number of the blowing holes 2 is 4.
[0064] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a staggered manner up and down.
[0065] The blowing holes 2 are arranged on both side walls of the skirt 1 in a manner perpendicular to the slit 3 .
[0066] Example 4
[0067] like Figure 6 As shown, (based on Example 1,) the utility model also provides a side blowing slit positive pressure drafting device with a jacket;
[0068] The number of the blowing holes 2 is 2.
[0069] The blowing holes 2 are arranged on the two side walls of the skirt 1 in a horizontally symmetrical manner.
[0070] The blowing holes 2 are arranged on both side walls of the skirt 1 in a manner perpendicular to the slit 3 .
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A side-blowing slit positive pressure drafting device with a jacket, characterized in that: The side-blowing slit positive-pressure drafting device with a jacket comprises: a skirt seat (1) mounted at the bottom of the drafting device and a side-blowing structure mounted on the two side walls of the skirt seat (1); The side blowing structure comprises: a blowing hole (2) provided on the side wall of the skirt seat (1), a static pressure chamber (3) arranged outside the side wall of the skirt seat (1), and a positive pressure blowing structure connected to the static pressure chamber (3) via an air transmission pipeline; The blowing hole (2) is completely located inside the static pressure chamber (3); The positive pressure blowing structure inputs high-pressure gas into the static pressure chamber (3). After passing through the static pressure chamber (3), the high-pressure gas is blown into the skirt seat (1) through the blowing hole (2), and blows air to the fiber bundle passing through the slit (11) in the skirt seat (1) from top to bottom, so that the fiber bundle forms an S-shaped running track in the slit, thereby increasing the drafting force on the fiber bundle and improving the running speed of the fiber bundle.
2. The side-blowing slit positive pressure drafting device with a jacket according to claim 1 is characterized in that: The static pressure cabin (3) is a cabin body enclosed by a static pressure cabin jacket (31) arranged on the outer side wall of the skirt (1).
3. The side-blowing slit positive pressure drafting device with a jacket according to claim 2 is characterized in that: The static pressure chamber jacket (31) is provided with a connecting pipe (32) for connecting to the positive pressure blowing structure.
4. The side-blowing slit positive pressure drafting device with a jacket according to claim 1, characterized in that: The blowing hole (2) is a long hole that runs through the inside and outside of the side wall of the skirt seat (1); The blowing holes (2) are long holes arranged horizontally along the length direction of the skirt seat (1); The length of the blowing hole (2) is not less than the length of the slit (11).
5. The side-blowing slit positive pressure drafting device with a jacket according to claim 1, characterized in that: The number of the blowing holes (2) is no less than 2.
6. The side-blowing slit positive pressure drafting device with a jacket according to claim 1, characterized in that: The blowing holes (2) are arranged on the two side walls of the skirt seat (1) in either a vertically staggered manner or a horizontally symmetrical manner.
7. The side-blowing slit positive pressure drafting device with a jacket according to claim 1, characterized in that: The blowing holes (2) are arranged on the two side walls of the skirt (1) in a manner perpendicular to the slit (11) or inclined downward from the outside to the inside.